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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// Copyright (C) 2011 Vicente J. Botet Escriba
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
// <boost/thread/mutex.hpp>
// class mutex;
// bool try_lock();
#include <boost/thread/mutex.hpp>
#include <boost/thread/thread.hpp>
#include <boost/detail/lightweight_test.hpp>
#include "../../../timming.hpp"
boost::mutex m;
#if defined BOOST_THREAD_USES_CHRONO
typedef boost::chrono::high_resolution_clock Clock;
typedef Clock::time_point time_point;
typedef Clock::duration duration;
typedef boost::chrono::milliseconds ms;
typedef boost::chrono::nanoseconds ns;
time_point t0;
time_point t1;
#endif
const ms max_diff(BOOST_THREAD_TEST_TIME_MS);
void f()
{
#if defined BOOST_THREAD_USES_CHRONO
t0 = Clock::now();
BOOST_TEST(!m.try_lock());
BOOST_TEST(!m.try_lock());
BOOST_TEST(!m.try_lock());
while (!m.try_lock())
;
t1 = Clock::now();
m.unlock();
#else
//time_point t0 = Clock::now();
//BOOST_TEST(!m.try_lock());
//BOOST_TEST(!m.try_lock());
//BOOST_TEST(!m.try_lock());
while (!m.try_lock())
;
//time_point t1 = Clock::now();
m.unlock();
//ns d = t1 - t0 - ms(250);
//BOOST_TEST(d < max_diff);
#endif
}
int main()
{
m.lock();
boost::thread t(f);
#if defined BOOST_THREAD_USES_CHRONO
time_point t2 = Clock::now();
boost::this_thread::sleep_for(ms(250));
time_point t3 = Clock::now();
#endif
m.unlock();
t.join();
#if defined BOOST_THREAD_USES_CHRONO
ns sleep_time = t3 - t2;
ns d_ns = t1 - t0 - sleep_time;
ms d_ms = boost::chrono::duration_cast<boost::chrono::milliseconds>(d_ns);
// BOOST_TEST_GE(d_ms.count(), 0);
BOOST_THREAD_TEST_IT(d_ms, max_diff);
BOOST_THREAD_TEST_IT(d_ns, ns(max_diff));
#endif
return boost::report_errors();
}
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